42results about How to "Increase rms" patented technology

A lining for use under head gear—such as baseball hats, top hats, helmets, cowboy hats, hard hats, beanies, stocking caps, etc.—comprised of two layers, one specifically for comfort, in both softness and breathability, and a second specifically for the filtering of salt, dirt, oils, particulate matter and other undesirable constituents contained in the sweat of the wearer. The two layers are each comprised of four roughly equal pieces of an isosceles triangular shape that are stitched together to form a half-dome. The two layers are then stitched together along the bottom circumference of said dome two form a single half-dome comprised of two individual layers. The two layers employ their relative absorbency to transport moisture from the head of the wearer and into the lining. The outer layer employs its maximal surface area to filter and store the sweat of the wearer, while maintaining breathability. Together the two layers form a lining that both protects the head gear from stains, discoloration, premature wear and odors, maximizing the effective lifespan of the head gear, while also maximizing for the wearer comfort both in terms of fit and breathability, maximizing the effective value of the head gear for the wearer.

The invention relates to a method for detecting inrush current distortion of a transformer based on a Rogowski coil, which belongs to the technical field of relay protection of electric power systems. The method comprises the following steps of: measuring primary side current of the transformer to acquire a differential voltage analog signal; acquiring a corresponding differential voltage digitalsignal; judging whether abnormal current occurs or not; performing cosine window-added Fourier transform on the differential voltage digital signal to solve effective values of every-time harmonic waves; calculating the degree of distortion, namely judging whether inrush current occurs or not according to the degree of distortion, and the like. By the method, the conditions that incorrect tripping of differential protection during on-load switch-on of the transformer is prevented and exciting current and fault current are strictly distinguished are ensured, a criterion value has extremely high redundancy, and the degree of distortion is accurately and reliably determined.

The invention provides a raw material skin unhairing method which comprises the following steps: firstly, under the action of composite enzyme depilatory, soaking raw material skin soaked in water into the depilatory to remove hair, taking out, thereby obtaining a half finished unhaired product; spraying a protein inhibition protecting liquid on the surface of the half finished unhaired product obtained in the former step, standing, and shaving, and thereby obtaining unhaired raw material skin, wherein the protein inhibition protecting liquid is a mixed liquid of a protease activity inhibitor and an animal skin protein protecting agent. As the animal skin composite enzyme is adopted to remove hair, association of hair follicle and hair papilla to hair roots can be effectively broken, a relatively rapid and relatively ideal hair root loosening effect can be achieved, damage to a loose side and a grain side can be reduced, and moreover after the hair roots at fiber loosened parts are loosened, as the mixed liquid of the protease activity inhibitor and the animal skin protein protecting agent is applied or spayed, over-action of protease can be avoided, and defects such as loose side and grain side loss can be further avoided.

Provided is a heat transfer device which has a function of generating power through vibration of capillary grooves having a thin piezoelectric film deposited thereon, in addition to a heat transfer function of discharging heat transferred from a heating element to the outside.

The invention provides a vehicle battery self-heating method and device, and the method comprises the steps: in responce to a request signal for heating a battery, a periodic signal with a set frequency is output to a vehicle battery self-heating device; an LC oscillation unit in the vehicle battery self-heating device is connected with a battery; the periodic signal comprises a first electric signal and a second electric signal which are alternate, and the first electric signal controls the LC oscillation unit and the battery to form a charging loop; the second electric signal controls the LC oscillation unit and the battery to form a discharge loop; and the set frequency is greater than the resonant frequency of the LC oscillation unit. By adopting the scheme provided by the invention to perform self-heating on the battery, a PTC (Positive Temperature Coefficient) heater does not need to be additionally arranged, the structure of the battery system is simplified, the cost is reduced, and on the other hand, the self-heating mode of the battery has higher heating efficiency and better uniformity.

A method for providing a dialing screen which visually changes depending on status information providable through a mobile terminal. Particularly, the dialing screen displays status information including network status information, time-zone information of a transmitting side or receiving side, etc., which can be provided through the mobile terminal, with graphic elements thereof embossed. Therefore, it is possible to output a dialing screen in which specific status information is reflected, so that the various tastes of the users can be reflected in the dialing screen and simultaneously visibility of the transmitted information increases.

A magnetically coupled reactor and a DC / DC converter are provided between a DC power supply and an inverter. A first smoothing capacitor is provided between the DC power supply and the coupled reactor. A second smoothing capacitor is provided between the DC / DC converter and the inverter. A controller is provided in order to control switching operations of the inverter and the DC / DC converter. The controller causes semiconductor switching elements composing upper and lower arms of the DC / DC converter to perform complementary operations so as to be alternately turned on / off, and causes left and right legs to operate with their switching phases shifted from each other, thereby electric charges stored in both smoothing capacitors are discharged by energy loss in the coupled reactor and the DC / DC converter.

The invention relates to a cooling structure of an engine bearing block, and belongs to the field of engines. By adopting the cooling scheme of the engine bearing block, the cooling structure has theadvantages that the better cooling effect is realized for the bearing block at the heat end part of the engine; by reducing the heat load of the bearing block, the vibration of a bearing in an inner cavity of the bearing block is reduced in the working process of the engine, the purpose of protecting the bearing is realized, the working stability of the engine is improved, and the service life ofthe bearing is prolonged.

The invention relates to a transparent display vehicle window based on a double-sided display function and a sequential control method thereof. The transparent display vehicle window based on the double-sided display function comprises a vehicle window body, a transparent display screen and an electric roller shutter film. The vehicle window body comprises outer side glass, a spacer and inner sideglass. The display surface of the transparent display screen faces the inner side of the vehicle window body; the display surface is provided with a first display area and a second display area; theelectric roller shutter film is positioned between the transparent display screen and the inner side glass; the electric roller shutter film is arranged to be unfolded or folded in a roller shutter mode. When the electric roller shutter film is unfolded, the electric roller shutter film is opposite to the first display area so as to reflect a picture displayed by the first display area; therefore,the reflection picture is overlapped with the picture displayed in the first display area so as to enhance display, the picture can be displayed through the back face of the first display area, the back face of the first display area is displayed outwards, the second display area is displayed inwards, and the double-face display function of the transparent display screen is achieved.